CO oxidation over gold nanoparticles supported on TiO2 and TiO2-ZnO:: catalytic activity effects due to surface modification of TiO2 with ZnO

被引：63

作者：

Mallick, K ^{[1
]}

Scurrell, MS ^{[1
]}

机构：

[1] Univ Witwatersrand, Sch Chem, Inst Mol Sci, ZA-2050 Johannesburg, South Africa

来源：

APPLIED CATALYSIS A-GENERAL | 2003年 / 253卷 / 02期

关键词：

in situ reduction; embedded gold nanoparticles; surface modification; CO-oxidation; Raman spectra; TEM; FF-IR; surface defect;

D O I：

10.1016/S0926-860X(03)00552-0

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In situ reduction of gold ions, by a strong reducing agent facilitates the formation of gold nanoparticles on suitable metal oxide supports in such a way that a narrower size distribution and smaller particle size are obtained. Improved catalytic activity is also observed. Introducing zinc oxide to titanium oxide causes a surface modification of the titanium oxide and leads to a reduced catalytic activity for CO oxidation. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：527 / 536

页数：10

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